1 /*
2 * Copyright (c) 2023 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include <unistd.h>
17 #include <sys/syscall.h>
18 #include <sys/resource.h>
19 #include "dfx/log/ffrt_log_api.h"
20 #include "eu/osattr_manager.h"
21 #include "qos_interface.h"
22 #include "qos_config.h"
23 #include "qos_policy.h"
24
25 namespace ffrt {
SetQosPolicy(struct QosPolicyDatas * policyDatas)26 int SetQosPolicy(struct QosPolicyDatas *policyDatas)
27 {
28 return QosPolicy(policyDatas);
29 }
30
QosPolicyInit()31 static __attribute__((constructor)) void QosPolicyInit()
32 {
33 int ret;
34
35 ret = SetQosPolicy(&QosConfig::Instance().getPolicySystem());
36 if (ret) {
37 FFRT_LOGE("uid %d set g_systemServerQosPolicy failed", getuid());
38 }
39
40 setFuncAffinity(SetAffinity);
41 setFuncPriority(SetPriority);
42 FFRT_LOGI("set qos policy finish");
43 }
44
SetAffinity(unsigned long affinity,int tid)45 int SetAffinity(unsigned long affinity, int tid)
46 {
47 cpu_set_t mask;
48 CPU_ZERO(&mask);
49 for (unsigned long i = 0; i < sizeof(affinity) * 8; i++) {
50 if ((affinity & (static_cast<unsigned long>(1) << i)) != 0) {
51 CPU_SET(i, &mask);
52 }
53 }
54 int ret = syscall(__NR_sched_setaffinity, tid, sizeof(mask), &mask);
55 if (ret < 0) {
56 FFRT_LOGE("set qos affinity failed for tid %d\n", tid);
57 }
58 return ret;
59 }
60
SetPriority(unsigned char priority,WorkerThread * thread)61 void SetPriority(unsigned char priority, WorkerThread* thread)
62 {
63 int ret;
64 if (priority < MAX_RT_PRIO) {
65 struct sched_param param;
66 param.sched_priority = MAX_RT_PRIO - priority;
67 ret = pthread_setschedparam(thread->GetThread().native_handle(), SCHED_RR, ¶m);
68 if (ret != 0) {
69 FFRT_LOGE("[%d] set priority failed ret[%d] errno[%d]\n", thread->Id(), ret, errno);
70 }
71 } else if (priority < MAX_VIP_PRIO) {
72 pid_t pid = getpid();
73 const std::string path = "/proc/" + std::to_string(pid) + "/task/" + std::to_string(thread->Id()) + "/vip_prio";
74 int vip_prio = MAX_VIP_PRIO - priority;
75 OSAttrManager::Instance()->SetCGroupPara(path, vip_prio);
76 } else {
77 struct sched_param param;
78 param.sched_priority = 0;
79 ret = pthread_setschedparam(thread->GetThread().native_handle(), SCHED_OTHER, ¶m);
80 if (ret != 0) {
81 FFRT_LOGE("[%d] set priority sched_normal failed ret[%d] errno[%d]\n", thread->Id(), ret, errno);
82 }
83 ret = setpriority(PRIO_PROCESS, thread->Id(), priority - DEFAULT_PRIO);
84 if (ret != 0) {
85 FFRT_LOGE("[%d] set priority failed ret[%d] errno[%d]\n", thread->Id(), ret, errno);
86 }
87 }
88 }
89 }
90